CN106084700A - A kind of low cost controllable full-biodegradable mulch film and preparation method thereof - Google Patents

A kind of low cost controllable full-biodegradable mulch film and preparation method thereof Download PDF

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CN106084700A
CN106084700A CN201610680499.4A CN201610680499A CN106084700A CN 106084700 A CN106084700 A CN 106084700A CN 201610680499 A CN201610680499 A CN 201610680499A CN 106084700 A CN106084700 A CN 106084700A
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antioxidant
mulch film
low cost
film
preparation
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刘维涓
陈月舞
吕春华
郑士方
胡玲
周芳芳
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Yunnan Tianhe Biological Polytron Technologies Inc
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Yunnan Tianhe Biological Polytron Technologies Inc
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protecting plants
    • A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
    • A01G13/0256—Ground coverings
    • A01G13/0268—Mats or sheets, e.g. nets or fabrics
    • A01G13/0275—Films
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/06—Biodegradable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2310/00—Masterbatches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/28—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for farming

Abstract

A kind of low cost controllable full-biodegradable mulch film and preparation method thereof, each component of described mulch film proportioning in parts by weight is: PBAT 15%～35%, PHA 15%～35%, PLA 15%～35%, calcium carbonate 20%～50%, antioxidant 0.1%～0.5%, UV absorbent 0.1%～0.5%, bulking agent 0.5～3%, degradable Masterbatch 0～1%.The whole life cycle design of the present invention possesses the mechanical property of common plastics mulch film, low cost of manufacture, and can regulate and control degradation time according to regional environment and crop cycle.

Description

A kind of low cost controllable full-biodegradable mulch film and preparation method thereof
Technical field
The present invention relates to the preparation method of a kind of mulch film, particularly to a kind of low cost controllable full-biodegradable mulch film and Preparation method, belongs to technical field of biological materials.
Background technology
Whole life cycle design can decompose generation CO the most completely2And H2O, will not cause secondary dirty to soil Dye, as Japan Biopol film, for the copolymer of hydroxybutyric acid Yu hydroxypentanoic acid, for another example polylactic acid (PLA), polycaprolactone (PCL), the ester of Merlon and aliphatic dicarboxylic acid and dihydroxylic alcohols polycondensation, it is possible to degradable.But at present the most on the market complete Biodegradable mulch but owing to there is composition of raw materials and complicated process of preparation, production cost is high, product is affected by environment relatively big, fall The solution time can not regulate and control, degradation cycle is long, mechanical property and the problem such as ruggedness is poor and can not get spread.In as State's patent CN102140185 describe a kind of can the preparation method of complete biodegradable fatty acid ester mulch film, although can realize Complete biodegradable, but mulch film cost is high, and poor heat resistance, complete biodegradable fatty acid ester technology is the most immature.Therefore it provides A kind of preparation technology is simple, production cost is low, degraded is complete, degradation cycle controllable, mechanical property are good mulch film and preparation thereof Method, becomes problem demanding prompt solution.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is provided that a kind of mechanical property possessing common plastics mulch film The low cost full-biodegradable mulch film of degradation time and can be regulated and controled according to regional environment and crop cycle.The present invention is also The preparation method of this mulch film is provided.
The technical solution realizing the object of the invention is as follows:
A kind of low cost controllable full-biodegradable mulch film, each component of described mulch film proportioning in parts by weight is: PBAT 15%～35%, PHA 15%～35%, PLA 15%～35%, calcium carbonate 20%～50%, antioxidant 0.1%～ 0.5%, UV absorbent 0.1%～0.5%, bulking agent 0.5～3%, degradable Masterbatch 0～1%.
Antioxidant of the present invention is by arylamine tertiary amine-type antioxidant, hydrazides type antioxidant, Hinered phenols antioxidant, thioesters Two or more proportionings in thioether-type antioxidant form.Described arylamine tertiary amine-type antioxidant such as antioxidant A H, described hydrazides type resists Oxygen agent such as ORA, described Hinered phenols antioxidant such as antioxidant 1010, antioxidant 1076, antioxidant 2246, described thioesters sulfur Ether type antioxidant such as antioxidant 2246-s, antioxidant methene 4426-s, anti-oxidant DLTP, antioxidant DSTP.Described ultraviolet is inhaled Receiving agent is BTA compounds or benzophenone compound.Described BTA compounds such as UV-P, UV- 327, described benzophenone compound such as UV-531, UV-9.Described bulking agent is that methacrylate, ethylene-vinyl alcohol are common One or more in polymers, maleic anhydride, ethylene-acrylic acid copolymer.
The preparation method of a kind of low cost controllable biological degradable mulch film of the present invention, comprises the following steps:
(1) degraded material mixing: use mixer, puts into mixed by PBAT, PHA, PLA, Paris white, degradable Masterbatch Material machine stirs, obtains mixed material；
(2) degradation master batch pelletize: by the mixed material that stirs through granulator granulation, obtain degradation master batch；
(3) thin film is made in blowing: degradation master batch adds inflation film manufacturing machine charging aperture blown film, and controlling screw rod processing temperature is 110 DEG C～120 DEG C, blowing head processing temperature is 120 DEG C～140 DEG C, prepares whole life cycle design.
The particle diameter of the degradation master batch that pelletize of the present invention obtains is 2.0mm～2.5mm, a length of 2.5mm～3.5mm.Preparation The whole life cycle design thickness obtained is 0.008～0.020mm.
In the component of degradative plastic film of the present invention, PBAT belongs to a class of PBS (poly butylene succinate), raw for thermoplasticity Thing degradative plastics, is the copolymer of tetramethylene adipate and mutual-phenenyl two acid bromide two alcohol ester, has the characteristic of PBA and PBT concurrently, both There are preferable ductility and elongation at break, also have preferable thermostability and impact property, also there is excellent biological degradability, It is suitable for inflation film and the multiple processing technique such as hollow container, extrusion working sheet, spinning, injection, prepares various complete biology Degraded macromolecular goods.And other kinds of PBS, owing to molecular weight is low, processing temperature is relatively low, viscosity is low, mechanical property is poor, Need to carry out blending and modifying research.
PHA (polyhydroxyalkanoate) is a kind of intracellular polyester synthesized by a lot of antibacterials, mainly makees in vivo Existing for carbon source and the Stored Matter of the energy, it has and is similar to the physicochemical characteristic of synthetic plastic and synthetic plastic does not has Many excellent in performance such as standby biodegradability, biocompatibility, optical activity, piezoelectricity, being separated by property of gas.It it is one The environment friendly biological plastics that energy is excellent, have again many adjustable material properties.
PLA (polylactic acid) is a kind of novel bio-based and Biodegradable material, use reproducible plant resources (as Semen Maydis) starch material that proposed makes.Starch material obtains glucose via saccharifying, then is sent out by glucose and certain strain Ferment makes highly purified lactic acid, then the polylactic acid by chemical synthesis process synthesis certain molecular weight.Its Heat stability is good, processing Temperature is 170～230 DEG C, the solvent resistance having had, and available various ways is processed, such as extruding, spinning, biaxial stretch-formed, note Penetrate blowing etc..The most biodegradable for carbon dioxide with water, any environmental pollution will not be produced.
CaCO3 have cheap, purity is high, inertia is big, Heat stability is good, join that interaction performance is good, oil absorbency is low, whiteness The features such as good, even particle size distribution, nontoxic, tasteless, good dispersion.Its use in degradative plastic film component ratio be up to 20%～ 50%, the cost of whole life cycle design can be greatly reduced, for the system of the present invention a kind of low cost controllable full-biodegradable mulch film Preparation Method lays the foundation.
The present invention compared with prior art, has the advantage that
(1) present invention carries out formula design to mulch film, to meet various index demand, solves the biological fall of single raw material Solve material and be difficult to the problem that film properties requires contentedly.This mulch film not only has general biodegradable function, but also permissible Ecological environment according to different regions and different plant growth demands, obtained by the proportioning being designed to membrane and be suitable for difference The degradable mulch of crop.The degradable black agglomerate of crop weeding raw material or green master batch can also be added, to stop light By or filter light effective to plant growing.
(2) containing the most cheap Paris white in mulch film of the present invention, and can while ensureing physical property, Reach the thinnest thickness, effectively reduce mulch film production cost.
(3) mulch film pliability of the present invention is good, intensity is high, heat and moisture preserving good, can bear and necessarily stretch change during plastic film mulch Shape and the film that will not break.
(4) mulch film of the present invention can start within projected life degraded, after controllably film cracking time is overlay film 20～ 70 days, the degradable cycle was 180～240 days, it is achieved complete biodegradable, does not results in the residual of mulch film.Therefore, will not destroy Soil structure and plant growing, it is possible to continue to increase crop yield, reduce white pollution.
(5) preparation method of mulch film of the present invention has convenient, simple to operate, the low cost of preparation and degradation time is controlled etc. excellent Point, it is adaptable to batch production large-scale production.
Detailed description of the invention
Embodiment 1
The preparation method of low cost controllable biological degradable mulch film is as follows:
(1) degraded material mixing: by mass fraction proportioning, by PBAT 26%, PHA 26%, PLA26%, calcium carbonate 20%, the complex (antioxidant 1010 anti-oxidant DLTP=3 2) 0.25% of antioxidant 1010 and anti-oxidant DLTP, purple Ultraviolet absorbers UV-P 0.25%, solubilizing agent methacrylate 1%, degradable black agglomerate powdered carbon 0.5% use batch mixer Stir, obtain mixed material；Described PBAT density is 1.15～1.25g/cm, and fusing point is 110 DEG C～120 DEG C.PHA is close Degree is 1.24g/cm, and fusing point is 80 DEG C～160 DEG C.The mean molecule quantity of PLA is 4～1,500,000, and glass temperature range is at 40 DEG C ～between 60 DEG C.Calcium carbonate particle diameter is 0.02 μm～0.05 μm；
(2) degradation master batch pelletize: by the mixed material that stirs through granulator granulation, obtain particle diameter be 2.0mm～ 2.5mm, the degradation master batch of a length of 2.5mm～3.5mm；
(3) thin film is made in blowing: degradation master batch adds inflation film manufacturing machine charging aperture blown film, and wherein screw rod processing temperature controls Between 110 DEG C～120 DEG C, blowing head processing temperature controls between 120 DEG C～140 DEG C, prepares complete biodegradable ground Film.
(4) warehouse-in: the whole life cycle design seaming prepared is loaded storehouse.
The present embodiment mulch film in Chuxiong, Yunnan Province, mountain of papers, area, three, Pu'er carry out plot experiment send out tobacco planting Existing, mulch film overlay film 50～about 60 days crackings, hereafter decomposition rate is accelerated, substantially can be degradable to about 210 days.
Embodiment 2
The preparation method of low cost controllable biological degradable mulch film is as follows:
(1) degraded material mixing: by mass fraction proportioning, by PBAT 15%, PHA 23%, PLA30%, calcium carbonate 28%, the complex (antioxidant 1076 antioxidant DSTP=1 1) 0.5% of antioxidant 1076 and antioxidant DSTP, ultraviolet Light absorbers UV-5310.5%, solubilizing agent maleic anhydride 2%, ethylene-acrylic acid copolymer 1% use batch mixer to be sufficiently stirred for Uniformly, mixed material is obtained；
Carry out degradation master batch pelletize afterwards, thin film, warehouse-in are made in blowing, and method is with embodiment 1.
The present embodiment mulch film carries out plot experiment discovery in Kunming, Yunnan area to tobacco planting, and overlay film is opened for about 60 days Splitting, hereafter decomposition rate is accelerated, substantially can be degradable to about 210 days.In Chuxiong, Yunnan Province, mountain of papers, ground, three, Pu'er District carries out plot experiment discovery, mulch film overlay film 40～about 50 days crackings to tobacco planting, and hereafter decomposition rate is accelerated, extremely About 210 days substantially can be degradable.
Embodiment 3
(1) degraded material mixing: by mass fraction proportioning, by PBAT 35%, PHA 15%, PLA15%, calcium carbonate 34%, complex (the antioxidant 2246 antioxidant methene 4426-s=3 of antioxidant 2246 and antioxidant methene 4426-s 2) 0.1%, Ultraviolet Absorber UV-P 0.1%, solubilizing agent ethylene-vinyl alcohol copolymer 0.5%, degradable black agglomerate charcoal Powder 0.3% uses batch mixer to stir, and obtains mixed material；Described PBAT density is 1.15～1.25g/cm, and fusing point is 110 DEG C～120 DEG C.PHA density is 1.24g/cm, and fusing point is 80 DEG C～160 DEG C.The mean molecule quantity of PLA is 4～1,500,000, glass Glass temperature range is between 40 DEG C～60 DEG C.Calcium carbonate particle diameter is 0.02 μm～0.05 μm；
Carry out degradation master batch pelletize afterwards, thin film, warehouse-in are made in blowing, and method is with embodiment 1.
The present embodiment mulch film in Chuxiong, Yunnan Province, mountain of papers, three the regional tobacco plantings in Pu'er carry out plot experiment on the ground and send out Existing, mulch film overlay film 30～about 40 days crackings, hereafter decomposition rate is accelerated, substantially can be degradable to about 180 days.
Embodiment 4
(1) degraded material mixing: by mass fraction proportioning, by PBAT 20%, PHA35%, PLA20%, calcium carbonate 22%, the complex (antioxidant A H anti-oxidant DLTP=3 2) 0.5% of antioxidant A H and anti-oxidant DLTP, UV absorbent UV-90.5%, solubilizing agent methacrylate 0.5%, maleic anhydride 0.5%, degradable black agglomerate powdered carbon 1% use batch mixing Machine stirs, and obtains mixed material；
Carry out degradation master batch pelletize afterwards, thin film, warehouse-in are made in blowing, and method is with embodiment 1.
The present embodiment mulch film in Chuxiong, Yunnan Province, mountain of papers, three the regional tobacco plantings in Pu'er carry out plot experiment on the ground and send out Existing, mulch film overlay film 60～about 70 days crackings, hereafter decomposition rate is accelerated, substantially can be degradable to about 220 days.
Described antioxidant is by arylamine tertiary amine-type antioxidant, hydrazides type antioxidant, Hinered phenols antioxidant, thioesters thioether-type Two or more proportionings in antioxidant form.Described UV absorbent is benzotriazole or benzophenone compound.
Embodiment 5
(1) degraded material mixing: by mass fraction proportioning, by PBAT 20%, PHA15%, PLA35%, calcium carbonate 28%, the complex (ORA antioxidant 2246-s=3 2) 0.5% of ORA and antioxidant 2246-s, UV absorbent UV- 5310.5%, solubilizing agent methacrylate 1% uses batch mixer to stir, and obtains mixed material；
Carry out degradation master batch pelletize afterwards, thin film, warehouse-in are made in blowing, and method is with embodiment 1.
Embodiment 6
(1) degraded material mixing: by mass fraction proportioning, by PBAT 18%, PHA15%, PLA15%, calcium carbonate 50%, the P complex (antioxidant 1010 anti-oxidant DLTP=3 2) 0.25% of antioxidant 1076 and antioxidant DLT, purple Ultraviolet absorbers UV-3270.25%, solubilizing agent methacrylate 1.5% use batch mixer to stir, and obtain mixture Material；
Carry out degradation master batch pelletize afterwards, thin film, warehouse-in are made in blowing, and method is with embodiment 1.
The whole life cycle design thickness that the present invention prepares is 0.008mm～0.020mm, can ensure physical property While accomplish the thinnest, effectively reduce mulch film production cost.Mulch film outward appearance is up to standard, homogeneous, without bubble, the speckle of impact use The defects such as point, fold, impurity, pin hole, flake and stiff block, do not affect the defect of use less than 20/100cm2；Ruggedness Good, intensity is high, laterally draws high intensity up to more than 16Mpa, and transverse and longitudinal hot strength is up to more than 17Mpa；Degradation cycle is controlled And degraded is completely, 20～70 days crackings after overlay film, hereafter decomposition rate is accelerated, and the degradable cycle is 180～240 days, fall Solve thoroughly, decrease the labor cost input taking off film link, reduce proportion of crop planting cost.
The all raw materials of the present invention such as PBAT, PHA, PLA, calcium carbonate, various antioxidant, various UV absorbent, each Plant bulking agent and degradable Masterbatch all directly can be purchased from market.

Claims (9)

1. a low cost controllable full-biodegradable mulch film, it is characterised in that each component of described mulch film joining in parts by weight Ratio is: PBAT 15%～35%, PHA 15%～35%, PLA 15%～35%, calcium carbonate 20%～50%, antioxidant 0.1%～0.5%, UV absorbent 0.1%～0.5%, bulking agent 0.5～3%, degradable Masterbatch 0～1%.
A kind of low cost controllable biological degradable mulch film the most according to claim 1, it is characterised in that described antioxidant Joined by two or more in arylamine tertiary amine-type antioxidant, hydrazides type antioxidant, Hinered phenols antioxidant, thioesters thioether-type antioxidant Ratio forms.
A kind of low cost controllable biological degradable mulch film the most according to claim 2, it is characterised in that described arylamine tertiary amine Type antioxidant such as antioxidant A H, described hydrazides type antioxidant such as ORA, described Hinered phenols antioxidant such as antioxidant 1010, antioxygen Agent 1076, antioxidant 2246, described thioesters thioether-type antioxidant such as antioxidant 2246-s, antioxidant methene 4426-s, anti- Oxygen agent DLTP, antioxidant DSTP.
A kind of low cost controllable biological degradable mulch film the most according to claim 1, it is characterised in that described ultraviolet is inhaled Receiving agent is BTA compounds or benzophenone compound.
A kind of low cost controllable biological degradable mulch film the most according to claim 4, it is characterised in that described benzo three nitrogen Azole compounds such as UV-P, UV-327, described benzophenone compound such as UV-531, UV-9.
A kind of low cost controllable biological degradable mulch film the most according to claim 1, it is characterised in that described bulking agent is One or more in methacrylate, ethylene-vinyl alcohol copolymer, maleic anhydride, ethylene-acrylic acid copolymer.
7. the preparation method of a kind of low cost controllable biological degradable mulch film as described in any one of claim 1～6, its feature It is, comprises the following steps:
(1) degraded material mixing: use mixer, puts into batch mixer by PBAT, PHA, PLA, Paris white, degradable Masterbatch In stir, obtain mixed material；
(2) degradation master batch pelletize: by the mixed material that stirs through granulator granulation, obtain degradation master batch；
(3) thin film is made in blowing: degradation master batch adds inflation film manufacturing machine charging aperture blown film, control screw rod processing temperature be 110 DEG C～ 120 DEG C, blowing head processing temperature is 120 DEG C～140 DEG C, prepares whole life cycle design.
The preparation method of a kind of low cost controllable biological degradable mulch film the most according to claim 7, it is characterised in that make The particle diameter of the degradation master batch that grain obtains is 2mm～2.5mm, a length of 2.5mm～3.5mm.
The preparation method of a kind of low cost controllable biological degradable mulch film the most according to claim 7, it is characterised in that system The standby whole life cycle design thickness obtained is 0.008～0.020mm.
CN201610680499.4A 2016-08-17 2016-08-17 A kind of low cost controllable full-biodegradable mulch film and preparation method thereof Pending CN106084700A (en)

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CN106674923A (en) * 2016-12-13 2017-05-17 常州绿之源高分子材料有限公司 Controllable-degradation PBAT/PLA (poly(butyleneadipate-co-terephthalate)/polylactic acid) composite film and preparation method thereof
CN107057177A (en) * 2017-04-27 2017-08-18 江苏华昌织物有限公司 A kind of degradable mulch Masterbatch and preparation method thereof
CN109135203A (en) * 2018-08-02 2019-01-04 江苏丘陵地区镇江农业科学研究所 A kind of south Chinese pear tree planting earth's surface cover film and preparation method thereof
CN109486138A (en) * 2018-11-01 2019-03-19 南京五瑞生物降解新材料研究院有限公司 PHA modified PLA/PBAT biodegradable resin and preparation method thereof
CN109535675A (en) * 2018-12-07 2019-03-29 北京惠林苑生物科技有限公司 The hydrolysis light of resistance to UV aging biodegradable plastic mulch and preparation method thereof
CN109679299A (en) * 2018-11-23 2019-04-26 中国科学院理化技术研究所 A kind of whole life cycle design and preparation method thereof with controllable induction period
CN109777019A (en) * 2019-02-27 2019-05-21 潍坊华潍新材料科技有限公司 A kind of nanocrystalline Wholly-degradable material and preparation method thereof
CN110117413A (en) * 2019-05-31 2019-08-13 兰州鑫银环橡塑制品有限公司 Plateau vegetable cultivation degradable mulch and its preparation method and application
CN110204871A (en) * 2019-06-21 2019-09-06 新疆蓝山屯河化工股份有限公司 A kind of preparation method of the PP Pipe Compound being used to prepare whole life cycle design and the preparation method of degradative plastic film
CN111825960A (en) * 2020-06-12 2020-10-27 彤程化学（中国）有限公司 Biodegradable agricultural film and preparation method and application thereof

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CN106674923A (en) * 2016-12-13 2017-05-17 常州绿之源高分子材料有限公司 Controllable-degradation PBAT/PLA (poly(butyleneadipate-co-terephthalate)/polylactic acid) composite film and preparation method thereof
CN107057177A (en) * 2017-04-27 2017-08-18 江苏华昌织物有限公司 A kind of degradable mulch Masterbatch and preparation method thereof
CN109135203A (en) * 2018-08-02 2019-01-04 江苏丘陵地区镇江农业科学研究所 A kind of south Chinese pear tree planting earth's surface cover film and preparation method thereof
CN109135203B (en) * 2018-08-02 2021-01-15 江苏丘陵地区镇江农业科学研究所 Surface covering film for planting southern Chinese pear trees and preparation method thereof
CN109486138A (en) * 2018-11-01 2019-03-19 南京五瑞生物降解新材料研究院有限公司 PHA modified PLA/PBAT biodegradable resin and preparation method thereof
CN109679299A (en) * 2018-11-23 2019-04-26 中国科学院理化技术研究所 A kind of whole life cycle design and preparation method thereof with controllable induction period
CN109679299B (en) * 2018-11-23 2020-11-10 中国科学院理化技术研究所 Full-biodegradable mulching film with controllable induction period and preparation method thereof
CN109535675B (en) * 2018-12-07 2020-08-25 北京惠林苑生物科技有限公司 Hydrolysis-resistant UV light aging-resistant biodegradable plastic mulching film and preparation method thereof
CN109535675A (en) * 2018-12-07 2019-03-29 北京惠林苑生物科技有限公司 The hydrolysis light of resistance to UV aging biodegradable plastic mulch and preparation method thereof
CN109777019A (en) * 2019-02-27 2019-05-21 潍坊华潍新材料科技有限公司 A kind of nanocrystalline Wholly-degradable material and preparation method thereof
CN110117413A (en) * 2019-05-31 2019-08-13 兰州鑫银环橡塑制品有限公司 Plateau vegetable cultivation degradable mulch and its preparation method and application
CN110117413B (en) * 2019-05-31 2021-06-29 兰州鑫银环橡塑制品有限公司 Degradable mulching film for plateau vegetable planting and preparation method and application thereof
CN110204871A (en) * 2019-06-21 2019-09-06 新疆蓝山屯河化工股份有限公司 A kind of preparation method of the PP Pipe Compound being used to prepare whole life cycle design and the preparation method of degradative plastic film
CN111825960A (en) * 2020-06-12 2020-10-27 彤程化学（中国）有限公司 Biodegradable agricultural film and preparation method and application thereof

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